Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quais são todas as datas no país do Canadá?
 ###Tabelas: CREATE TABLE national_softball_congress_1947_to_1957 (national_softball_congress_1947_to_1957_id AUTO_INCREMENT PRIMARY KEY, Year INT, 1st Place Team VARCHAR, 2nd Place Team VARCHAR, 3rd Place Team VARCHAR, 4th Place Team VARCHAR, Host Location VARCHAR) CREATE TABLE winners (winners_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Dates VARCHAR, Champion VARCHAR, Country VARCHAR, Score VARCHAR, Tournament location VARCHAR, Purse ($) INT, Winners share ($) INT) CREATE TABLE charter_airlines (charter_airlines_id AUTO_INCREMENT PRIMARY KEY, Airline VARCHAR, Fleet Size INT, Notes VARCHAR, IOSA (IATA) VARCHAR, EASA (EU) VARCHAR, IASA (FAA) VARCHAR) CREATE TABLE canadian_floral_collection (canadian_floral_collection_id AUTO_INCREMENT PRIMARY KEY, Year INT, Theme VARCHAR, Artist VARCHAR, Finish VARCHAR, Issue Price VARCHAR, Total Mintage INT) CREATE TABLE _1482–1700 (_1482–1700_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Father VARCHAR, Birth VARCHAR, Marriage VARCHAR, Became Countess VARCHAR, Ceased to be Countess VARCHAR, Death VARCHAR, Spouse VARCHAR)  
SELECT Dates FROM winners WHERE Country = Canada